Final answer:
According to Jean Piaget's theory of cognitive development, Grace would be in the formal operational stage. This stage typically occurs from age 11 and onward, during which individuals can engage in abstract thinking, consider hypothetical situations, and make moral judgments based on evidence.
Step-by-step explanation:
According to Jean Piaget's theory of cognitive development, Grace would be in the formal operational stage. This stage typically occurs from age 11 and onward, during which individuals can engage in abstract thinking, consider hypothetical situations, and make moral judgments based on evidence. In formal operational thought, individuals can analyze complex topics like politics and ethics, using logical reasoning and integrating emotion and context into their decision-making process.